What is CVE-2026-49144?

CVE-2026-49144 is a medium-severity vulnerability in Browserstack Browserstack-runner, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-06-02.

How severe is CVE-2026-49144?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Browserstack Browserstack-runner

CVE-2026-49144

BrowserStack Runner through 0.9.5 contains a path traversal vulnerability in the _default HTTP handler in lib/server.js that allows unauthenticated network-adjacent attackers to read arbitrary files. Attackers can exploit the unauthenticat…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (7.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Browserstack Browserstack-runner — versions 0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-49144?: CVE-2026-49144 is a medium-severity vulnerability in Browserstack Browserstack-runner, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-06-02.
How severe is CVE-2026-49144?: Medium severity. CVSS v3 base score is 6.5 out of 10.